Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-24 14
+44 2392-232392
Model XDL20-8-140S
Rev. A
Delay Line
DESCRIPTION
The XDL20-8-140 is a surface mount delay line that uses a slow wave
coupling structure that maximizes the amount of delay per unit area over
other distributed delay structures. The XDL20-8-140 can be used in
amplifier linearization applications from 1805 – 1990MHz. The XDL20-8-
140 is ideal for use in the main loop of feed forward and in pre-distortion
amplifiers. The Xinger® delay lines are a low cost, high quality alternative to
the traditional coaxial and filter solutions presently available. Parts have
been subjected to rigorous qualification testing and units are 100% tested.
Available in 6 of 6 tin immersion (XDL20-8-140S ) RoHS compliant finishes.
ELECTRICAL SPECIFICATIONS
Features:
• Production Friendly
• Consistent Delay
• Stable Over Temperature
• Surface Mountable
• Available in Tape & Reel
• Non-Lead Solder Paste
Compatible
• Available in Lead-Free as
illustrated) or Tin-Lead
• 100% Tested
Frequency (MHz.) 1805-1880
DCS Band 1930–1990
PCS Band
Mean Delay (nS) 13.60 ± 0.28 14.2 ± 0.28
Deviation from Linear
Phase
(Degrees Max) ± 1.0 ± 1.0
Amplitude Flatness
(dB p-p) 0.40 0.30
Return Loss (dB min) 20 20
Insertion Loss (dB/nS) 0.55 0.55
Power Handling (Watts) 1 1
ΘJC (°C/watts) 5 5
Operating Temp. (°C) -55 to +85 -55 to +85
Specification based on performance of unit pro perly installed on microstrip printed ci rcuit boards with 50 Ω
nominal impedance. Specifications subject to change without notice.
OUTLINE DRAWI NG
.134±.027
[3.39±0.68]
1.000±.010
[25.40±0.25]
1.000±.010
[25.40±0.25]
2X .070±.004 S
Q
[1.78±0.10]
Pin 2 Pin 1
XDL20-8-140* Mechanical Outline
Dimensions are in Inches [Millimeters]
Hot
Via
2X .037±.004
[0.94±0.10]
GND
2X .062±.004
[1.58±0.10]
GND
Orientation
Marker Denotes
Pin Location
Denotes
Array Number
.774±.004
[19.65±0.10]
Hot
Via Hot
Via
.773±.004
[19.64±0.10]
.848±.004
[21.54±0.10]
2X R.116
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Available on Tape and
Reel For Pick and Place
Manufacturing.
Model XDL20-8-140S
Rev. A
TYPICAL PERFORMANCE: 500 M H z. To 2500 MHz.
AVERAGE DELAY
The average delay is defined as the group delay of the input signal through the delay line. Because the Xinger delay
lines take advantage of a narrow band tuning technique, the average delay over the broad band varies. Because the
XDL20-8-140 is tuned at 2.0GHz, the average delay in that range is larger than at 1.0 GHz and specifications reflect
this variation. The lot-to-lot variation is reflected in the plus/minus toleran ce given in specifications.
Refer to Anaren Application Note AAN-232 for further information on Xinger delay lines.
MOUNTING GUIDELINES:
XDL20-8-140* Mounting Footprint
Dimensions are in Inches [M illimeters]
2X 50
Transmission
Line
2X .076 SQ
[1.93]
To insure proper electrical and thermal performance
there must be a ground plane with 100%
solder c onnection underneath the part
2X Ø.116
[2.95]
.869
[22.06]
.848
[21.54]
.889
[22.58] Multiple
plated thru holes
to ground
2X .037
[0.94]
2X .037
[0.94]
In order for Xinger surface mount delay lines to work
optimally, there must be 50Ω transmission lines leading to
and from all of the RF ports. Also, there must be a very
good ground plane under the part with a number of plated
thru holes to ensure proper electrical performance. If any
of these conditions are not satisfied, insertion loss,
average delay and VSWR may not meet published
specifications.
When a surface mount delay line is mounted to a printed
circuit board (PCB), the primary concerns are; insuring
the RF pads of the device are in contact with the circuit
trace of the PCB and the ground plane of neither the
component nor the PCB are in contact with the RF signal.
An example of how the PCB footprint could look is shown
below. In particular designs, the 50Ω lines need to be
adjusted to the unique dielectric coefficients and
thicknesses as well as varying pick and place equipment
tolerances.
Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-24 14
+44 2392-232392
Model XDL20-8-140S
Rev. A
Packaging and ordering Information
Parts are available in both reel and tube. Packaging follows EIA 481-2. Parts are oriented in tape and reel as
shown below. Minimum order quantities are 250 p er reel and 19 per tube.
Carrier Tape
Orientation
Marker
Reel
